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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz>
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/statvfs.h>
#define TST_NO_DEFAULT_MAIN
#include "tst_test.h"
#include "tst_fs.h"
void tst_fill_fs(const char *path, int verbose)
{
int i = 0;
char file[PATH_MAX];
char buf[4096];
size_t len;
ssize_t ret;
int fd;
struct statvfs fi;
statvfs(path, &fi);
for (;;) {
len = random() % (1024 * 102400);
snprintf(file, sizeof(file), "%s/file%i", path, i++);
if (verbose)
tst_res(TINFO, "Creating file %s size %zu", file, len);
fd = open(file, O_WRONLY | O_CREAT, 0700);
if (fd == -1) {
if (errno != ENOSPC)
tst_brk(TBROK | TERRNO, "open()");
tst_res(TINFO | TERRNO, "open()");
return;
}
while (len) {
ret = write(fd, buf, MIN(len, sizeof(buf)));
if (ret < 0) {
/* retry on ENOSPC to make sure filesystem is really full */
if (errno == ENOSPC && len >= fi.f_bsize/2) {
SAFE_FSYNC(fd);
len /= 2;
continue;
}
SAFE_CLOSE(fd);
if (errno != ENOSPC)
tst_brk(TBROK | TERRNO, "write()");
tst_res(TINFO | TERRNO, "write()");
return;
}
len -= ret;
}
SAFE_CLOSE(fd);
}
}
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